It is ironic that given on how clean cut of a hero Captain America is portrayed as, that when it comes to the interpretation/handling of his love life, that the writer chose to give him one that would raise a good amount of eyebrows.lol

But like I said, if Marvel Studios really feel that that relationship shared between Sharon and Peggy may make it too weird for a majority of the audience for when Sharon and Steve get together, then they could easily change the familial bonds between them.